Our Team

Surgical oncology

Taylor Riall, MD, PhD

Co-director, Oncology Service Line, Banner – University Medical Center Tucson
Specialties: GI surgery, hepatobiliary and pancreatic surgery, surgical oncology Medical School: Johns Hopkins University School of Medicine, Baltimore, MD Residency: Johns Hopkins University School of Medicine, Baltimore, MD
Fellowship: Pancreaticobiliary Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
Board Certification: American Board of Surgery
Faculty Appointment: Professor, Surgery

Mohammad Khreiss, MD

Specialties: General surgery, hepatobiliary and pancreatic surgery, surgical oncology
Medical School: American University of Beirut Faculty of Medicine, Lebanon
Residencies: General Surgery, American University of Beirut Faculty of Medicine, Lebanon; General Surgery,
University of Arizona College of Medicine, Tucson
Fellowships: Hepatobiliary Surgery and Surgical Oncology, University of Pittsburgh Medical Center, PA
Board Certifications: General Surgery and Surgical Oncology, American Board of Surgery
Faculty Appointment: Clinical Associate Professor, SurgeryChanges from GI collateral:

Dr. Luisine Mesropyan wears a white lab coat.

Lusine Mesropyan, DO, MA

Specialties: GI surgery, hepatobiliary and pancreatic surgery, surgical oncology Medical School: Touro University College of Osteopathic Medicine, Vallejo, CA
Residencies: Conemaugh Memorial Medical Center, Johnstown, PA; St. Barnabas Hospital, New York City, NY Fellowship: Hepatobiliary Surgery, Florida Hospital East Orlando
Board Certification: Surgical Oncology, American Osteopathic Board of Surgery
Faculty Appointment: Clinical Assistant Professor, Surgical Oncology

Carrie Luu MD

Specialties: GI surgical oncology, surgical oncology Medical School: New York Medical College, Valhalla
Residency: Harbor - University of California Los Angeles Medical Center, West Carson
Fellowship: Surgical Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
Board Certifications: General Surgery and Surgical Oncology, American Board of Surgery
Faculty Appointment: Clinical Assistant Professor, Surgical Oncology

Photo of Faisal Jehan wearing a dark suit and tie.

Faisal Jehan, MD

Photo of Chelsea Wozniak wearing a white lab coat

Chelsea Wozniak, PA

Physician Assistant, HPB

Interventional gastroenterology and hepatology

Oleh Haluszka, MD

Specialty: Gastroenterology, interventional gastroenterology, therapeutic endoscopy
Medical School: Uniformed Services University School of Medicine, Bethesda, MD
Residency: Naval Medical Center, San Diego, CA
Fellowships: Gastroenterology, Naval Medical Center, San Diego, CA; Therapeutic Endoscopy, Medical College of Wisconsin, Milwaukee
Board Certifications: Gastroenterology and Internal Medicine, American Board of Internal Medicine
Faculty Appointment: Clinical Professor, Gastroenterology (Clinical Series Track)

Photo of Abboud Gebran wearing a tie and white shirt.

Gebran Abboud, MD, AGAF

Specialty: Interventional Gastroenterology, Endoscopic Retrograde Cholangiopancreatography (ERCP), Endoscopic Mucosal Resection, Endoscopic Ultrasound Esophageal Dilation, Difficulty Swallowing/Dysphagia, Papillotomy Stone Retrieval
Medical School: Uniformed Services University School of Medicine, Bethesda, MD
Residency: University of Southern California/Los Angeles General Medical Center (USC/LA General), Internal Medicine
Fellowships: Cedars-Sinai Medical Center, Los Angeles, Interventional Gastroenterology and Endoscopic Ultrasonography
University of Southern California/Los Angeles General Medical Center (USC/LA General), Gastroenterology,
Board Certifications:
Faculty Appointment: Clinical Assistant Professor

Geoffrey Block, MD, smiles for a portrait in his white lab coat

Geoffrey Block, MD, MS

Medical Director, Liver Transplant
Specialties: Hepatology, interventional gastroenterology, transplant hepatology
Medical School: Wake Forest University School of Medicine, Winston-Salem, NC
Residency: University of Pittsburgh (Pitt) School of Medicine, PA
Fellowships: Gastroenterology and Research, Pitt School of Medicine, PA
Board Certifications: Gastroenterology, Hepatology, Internal Medicine, and Transplant Hepatology, American Board of Internal Medicine
Faculty Appointment: Assistant Professor, Medicine

Medical oncology

Rachna T. Shroff, MD, MS

Co-director, Oncology Service Line, Banner – University Medical Center Tucson; GI Clinical Research Team Co-lead
Specialties: Biliary tract cancers, cholangiocarcinoma, hepatocellular carcinoma, pancreatic cancers
Medical School: Thomas Jefferson University Sidney Kimmel Medical College, Philadelphia, PA
Residency: Washington University School of Medicine/Barnes-Jewish Hospital, St. Louis, MO
Fellowship: Medical Oncology, University of Texas MD Anderson Cancer Center, Houston
Board Certification: Medical Oncology, American Board of Internal Medicine
Faculty Appointment: Associate Professor, Hematology and Oncology (Tenure Track)

Junaid Arshad, MD

Specialties: Gastric cancers, esophageal cancers, neuroendocrine tumors, upper GI cancers
Medical School: King Edward Medical University, Lahore, Pakistan
Residency: Saint Mary’s Hospital, Waterbury, CT
Fellowship: Hematology and Oncology, University of Miami Health/Jackson Memorial Hospital, FL
Board Certifications: Hematology, Internal Medicine, and Medical Oncology, American Board of Internal Medicine
Faculty Appointment: Assistant Professor, Hematology and Oncology (Clinical Scholar Track)

GI interventional radiology

Shamar Young, MD

Specialties: Diagnostic radiology, interventional radiology, vascular interventional radiology
Medical School: University of Florida (UF) College of Medicine, Gainesville
Residency: UF College of Medicine, Gainesville
Fellowship: Vascular and Interventional Radiology, University of Minnesota Medical School, Milwaukee
Board Certifications: Diagnostic Radiology and Interventional Radiology, American Board of Radiology
Faculty Appointment: Associate Professor, Medical Imaging (Clinical Scholar Track)

Gregory Woodhead, MD, PhD

Specialties: Diagnostic radiology, interventional radiology, nuclear imaging, vascular radiology
Medical School: Northwestern University Feinberg School of Medicine, Chicago, IL
Residency: University of Arizona (UA) College of Medicine, Tucson
Fellowships: Nuclear Imaging and Vascular and Interventional Radiology, UA College of Medicine, Tucson
Board Certifications: Diagnostic Radiology and Interventional Radiology, American Board of Radiology
Faculty Appointment: Assistant Professor, Medical Imaging (Tenure Track)

Daniel Goldberg smiles in a portrait while wearing a white lab coat.

Daniel Goldberg, MD

Specialty: Diagnostic radiology, interventional radiology
Residencies: Diagnostic Radiology, University of Arizona (UA) College of Medicine, Tucson; General Surgery, Brown University Warren Alpert
Medical School: Providence, RI
Fellowship: Interventional Radiology, UA College of Medicine, Tucson
Board Certification: American Board of Radiology
Faculty Appointment: Assistant Professor, Medical Imaging (Clinical Scholar Track)

Artyom Abramyan in a white lab coat and pink and black plaid tie with light blue checked shirt.

Artyom Abramyan, DO

Specialties: Interventional radiology
Medical School: Northwestern University Feinberg School of Medicine, Chicago, IL
Residency: Diagnostic Radiology, University of Arizona, Tucson, AZ,
Fellowships: Interventional Radiology, University of Arizona, Tucson, AZ
Board Certifications:
Faculty Appointment: Clinical Assistant Professor, Interventional Radiology

Photo of Lucas Struycken wearing a lab coat and tie.

Lucas Struyken, MD

Specialties: Interventional Radiology, Interventional Oncology, Minimally Invasive Surgery
Medical School: Keck School of Medicine of USC
Residency: Diagnostic Radiology, University of Arizona, Tucson, AZ
Fellowships: Vascular and Interventional Radiology Integrated Fellowship, University of Arizona Department of Medical Imaging
Board Certifications: American Board of Radiology
Faculty Appointment: Assistant Professor, Department of Radiology and Imaging Sciences

Jack Hannallah, MD, smiles in a portrait in a white lab coat.

Jack Hannallah, MD, MBA, MPH

Specialties: Diagnostic radiology, interventional radiology, vascular and interventional radiology
Medical School: University of Arizona (UA) College of Medicine, Tucson
Residencies: Diagnostic Radiology and General Surgery, UA College of Medicine, Tucson; Diagnostic Radiology, Medical College of Wisconsin, Milwaukee
Fellowship: Vascular and Interventional Radiology, UA College of Medicine, Tucson
Faculty Appointment: Assistant Professor, Medical Imaging (Clinical Scholar Track)

Diagnostic radiology

Hina Arif-Tiwari, MD, FSAR

Specialties: Abdominal Imaging and Diagnostic Radiology
Residency: Indira Gandhi Medical College
Fellowship: Vancouver General Hospital and St. Paul's Hospital
Board Certifications: Radiology – Diagnostic, American Board of Radiology
Faculty Appointment: Professor, Radiology and Imaging Sciences, Medicine, Pathology, and Surgery

Portrait of Christopher Miller in a lab coat and tie.

Chris Miller, MD

Specialties: Diagnostic Radiology and Abdominal Imaging
Residency: Diagnostic Radiology, University of Arizona - Banner University Medical Center
Fellowship: Body MRI Fellowship: Mayo Clinic School of Graduate Medical Education, Phoenix, Arizona
Board Certifications: American Board of Radiology
Faculty Appointment: Assistant Professor, Radiology and Imaging Sciences

Portrait of Rami Sulaiman wearing a lab coat and tie.

Rami Sulaiman, MD

Specialties: Abdominal Imaging
Residency: Saint Louis University, MO
Yale New Haven Health, Bridgeport Hospital, CT
Fellowship: Abdominal Imaging Fellowship, University of Arizona - Banner University Medical Center
Board Certifications: American Board of Radiology (Core Exam), #75571, USMLE Step 3, #0-863-906-4, ECFMG Certification, #0-863-906-4, USMLE Step 2 CK, #0-863-906-4,
USMLE Step 1, #0-863-906-4, 2012
Faculty Appointment: Assistant Professor of Radiology and Imaging Sciences, Abdominal Radiology Division, U of A

Pathology

Portrait of Alexis Elliott wearing glasses and smiling.

Alexis Elliott, MD

Specialties: Pathology
Residency: Medical University of South Carolina, Charleston, Combined Anatomic Pathology and Clinical Pathology residency program
Fellowship: Medical University of South Carolina (MUSC), Charleston, SC Cytopathology fellowship program
Banner-University Medical Center Tucson (BUMCT), Gastrointestinal Pathology Fellowship Program
Board Certifications: Diagnostic Radiology and Interventional Radiology, American Board of Radiology
Faculty Appointment: Assistant Professor, Pathology

Portrait of David Nolte wearing a suit, tie and glasses.

David Nolte, MD

Specialties: Pathology
Residency: University of Arizona College of Medicine-Tucson, Anatomic and Clinical Pathology
Fellowship: Mayo Clinic, Rochester, MN, Surgical Pathology
Board Certifications: Diagnostic Radiology and Interventional Radiology, American Board of Radiology
Faculty Appointment: Assistant Professor, Pathology

Geneticist

Lauren Maynard, MS, CGC

Lauren Maynard, MS, CGC is a certified genetic counselor through the American Board of Genetic Counseling. She works at Banner Heath for the University of Arizona Cancer Center as a part of the multi-disciplinary High Risk Clinic. In her clinical role, she provides genetic counseling and genetic testing for individuals with a personal and/or family history of cancer to patients with diagnoses of pancreatic, hepatobiliary, gastrointestinal, and a broad range of cancer types which are potentially hereditary, as well as those who have a family history of these cancers. Her work plays a major role in identifying patients who qualify for high risk pancreatic cancer screening and other forms of high risk screening.

In her clinic, she evaluates the likelihood that cancer for an individual or family is hereditary and provides information about cancer genetics, genetic testing, and personalized cancer screening options. She assists patients with decisions regarding genetic testing, with test interpretation, and serves as a resource for families to understand how their genetics or family history contributes to cancer risks as well as risk reduction and screening options. . She is passionate about broadening the availability of clinical genetic counseling services in the Tucson area and training new genetic counselors at the University of Arizona Genetic Counseling Program.

HPB-Our team